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What Happens When You Faint?

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Why do we faint? Because sometimes, your nervous system just doesn’t know what to do with itself. Hosted by: Hank Green ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, John Szymakowski, Fatima Iqbal, Justin Lentz, David Campos, and Chris Peters. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: http://faculty.weber.edu/molpin/healthclasses/1110/bookchapters/stressphysiologychapter.htm http://intermountainhealthcare.org/ext/Dcmnt?ncid=520408204 http://circ.ahajournals.org/content/106/9/1048.full http://circ.ahajournals.org/content/113/16/e715.full http://www.ncemi.org/cse/cse0101.htm http://www.nhs.uk/Conditions/Fainting/Pages/Causes.aspx
Категория: Образование
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Текстовые комментарии (1966)
Anonymous (2 дня назад)
I wanna faint.... I never fainted before... it low-key looks fun
Msflamingo2008 (5 дней назад)
Dont be afraid to faint! Don't feel embarrassed either. Our bodies are amazing & fainting is like a natural "reboot". Tell someone. Sit down & put ur head between ur legs (this gets blood flowing 2 ur brain.) Many times, ur body gives u a "warning" prior 2 fainting like dizziness, feeling lightheaded, or weakness. If ur alone, get on the floor, & if necessary, call 911. Fainting doesnt normally cause injury, but falling can! Go see a Doctor. *I'm not a medical professional. This is for informational purposes only. (I'm sharing from personal experiences.) Stay healthy & happy! X💖
Aroze Sambaa (19 дней назад)
I fainted in the pub full of people the other day 🙄
diana ferguson (21 день назад)
i had this feeling about 4 times now i am so scared. my pressure and sugar was ok. i almost fainted in church today. help
Itskoalacupcake (21 день назад)
I’m dizzy.. rn watching this
yes please (26 дней назад)
I fainted early today thats why i came here
yes please (25 дней назад)
+Nikki Cook yeah im not sure about the mini seizure you had
Nikki Cook (26 дней назад)
+yes please that's lucky haha, I just hope it doesn't happen again. No one was home either so luckily I didn't hit my head. I'm mainly scared because no one seems to have the mini seizure thing when they faint
yes please (26 дней назад)
+Nikki Cook yikes thats scary my friend caught me when i fainted
Nikki Cook (26 дней назад)
I fainted about an hour ago, I stood up from bed too fast and then I woke up outside my room but I don't even remember walking that far. It was super scary because when I gained consciousness I was shaking and like having a mini seizure for like 5 seconds and I don't know how long I was like that because maybe I was shaking when I was unconscious too. I now have a bruise on my back but do you know if its normal to shake heaps when you faint because no one else seems too, I literally thought I had a mini seizure
Zane Time (1 месяц назад)
Why do I start breaking into a smile and start laughing when I watch these types of videos?
Craigslist Assassin (1 месяц назад)
I just fainted a few minutes ago. It was weird. I jumped out of my bed to go brush my teeth. I started losing consciousness and before I even knew it I was on the floor on my 4 limbs. Then I just involuntarily bashed my head against the ground, bruising the right side of my face in the process. I was lucky that the floor was a carpet one. I even hurt the back of my neck.
Matthew m (1 месяц назад)
I have fainted or black out when I was on that mount Everest rollercoaster ride and i woke back up like 1min and I never went to that ride ever again...it was at animal kingdom
Thegreatcomic Swagger!! (1 месяц назад)
My mom screamed in fear
Thegreatcomic Swagger!! (1 месяц назад)
I fainted 2 days ago. In my young age by holding my breath then everything got bright and I dunno what happened next... Then I ended up on the floor. Naked in the shower.
Gembi Wembi (1 месяц назад)
I am watching this video because I almost fainted today in front of checking out a customer. I had to tell my co-worker who was near by to get a manager because I was fainting. Freaked everyone out.. so embarrassing.
cainster (1 месяц назад)
I fainted the first time that I donated blood, because I wasn't ready or realizing what was needed (I hadn't eaten much). Everything started to go gray at the edge of my eyes and started moving in toward the center like if you had just turned an old black-and-white television screen off. I had been talking to a nursing student, and said "Something's about to happen", and eight seconds later I regained consciousness on the floor being asked my name. I can actually access my memory and it's like defragging a hard drive when you see a rectangle standing up that's filled in. I can "find" that memory and I can "see" those eight seconds, but I have no memory of them. As if I had been asleep.
Dave Sebuyira (1 месяц назад)
I fainnted once cause I was trying to hold my breath. That was stupid. 😅. If the chair wasn't there at that moment I would have split my head! This all happened at the hairdressers! Everyone was staring. I was so embarased. My mum was like wtf happened.!
xCOCONUTSx (1 месяц назад)
(Excuse my English - please correct my errors!) I fainted this morning when I got blood drawn at the doctor. I think this was the second time that I fainted. A few years ago I felt something similar after I had eaten food that was too hot, but there was nobody around to confirm that I actually fainted. Both times I was unconscious for a very short time (like 5 seconds maybe) and it didn't feel bad or anything so as for me, a person who's (not extremely) grossed out by this kind of things, fainting is not as bad as you'd think. At least when you don't hurt yourself when falling down. Don't think you're "too strong" to faint! I love horror movies and I am fascinated by weird stuff, so I thought looking at my arm while getting my blood drawn wasn't going to be a big deal. (It wasn't a big deal the first time I got my blood drawn, but I don't remember how long I looked at my arm that time.) My grandma was there and offered to distract me, yet I laughed and said I didn't need that. The doctor asked if I could handle it and I said yes. It was going well at first. It's just some blood, I thought. Until I started thinking about how my "life juice" (lol) was leaving my body. That's when I started feeling lightheaded (not a nice feeling). Next thing I know: I was lying down with my eyes closed and my doctor was keeping my legs in the air. My grandma then asked if I was okay and I answered with a weak voice, but I wasn't feeling like opening my eyes yet because it took a few seconds for me to get the energy to do that. Then I slowly started getting to my normal self again, and I felt much better because of the "reset". The doctor also said that when I fainted I stared at nothing in particular for a while and she said I looked very pale. Fortunately, everything is back to normal now. • Tip 1: Don't start thinking in depth about whatever will make you faint, just keep thinking about other things. • Tip 2: Tell the people around you you're not feeling well so they can prepare and help. • Tip 3: When you think you're going to faint, find yourself a position to make more blood rush to your brain. Thanks for coming to my TEDtalk. Edit: apparently the part about my eyes wasn't true. My grandma told me my eyes were open the entire time, which is scary to me.
Octavio Rueda (1 месяц назад)
Happened to me twice
Shaboinky Fam (1 месяц назад)
About a 2-3 weeks ago I was sitting Down in a car & I was with my friend & I felt like my head was tingly & like my brain was floating & I went sorta deaf & blind & I told him I was going to faint which I did, but when I was unconscious for that 5-10 seconds he said I was convoluting slightly & I had peed my pants, he brought me into the ER and they said I fainted from slightly low blood sugar & stress, but ever since that happened I’ve been feeling weird & always having these fainting spells, just at random times I feel like I’m going to faint & I try not to. I’m going to be 19 soon. And I’m so curious what is wrong with me? Is it anxiety? Or am I having slight seizures? Is there something wrong with my brain? I Don’t Know but im tired of fainting or feeling dizzy & scared all the time it sucks 💔💔💔😢😢
Axionnes Mapping (1 месяц назад)
*I fainted today because I dislocated my finger lol and it lasted like 5 min*
Monika Cult (1 месяц назад)
I'm fainting everyday at least twice. We have it normal in our family :/
Jasmine McKinnon (1 месяц назад)
I’m 11 and recently I’ve been getting very dizzy, everything goes blurry and appears spotted and it scares me because I don’t know what it’s from.. anyone help? I dealt of sports and I’m worried I’ll faint while doing some of them :/
Jessica Maus (1 месяц назад)
i stabbed my hand this morning with a knife and almost passed out
Chloe O Connell (2 месяца назад)
First time I fainted I fell into my lockers, knocking my friend into her locker and the whole school saw me I was embarrassed
Axecc 1594 (2 месяца назад)
I fainted today and ended up in hospital
David Urban (2 месяца назад)
Ah, I once fainted in class while getting feedback from my teacher after a presentation, not the moment I expected it to happen
Nikola Vlah (2 месяца назад)
so, why does body sudenly experience "fight or flight response"?
Courtney Hastwell (2 месяца назад)
I fainted yesterday for first time and I lost a bit of my memory of what happened before and apparently I was walking funny
Cassandra Martinez (2 месяца назад)
I got accused of something i didnt do and this happened i was also shaking
FANGIRL (2 месяца назад)
Lmao I was having injections at school today and I fainted. Funny part is I did the same thing last year. Fammm people thought I was dead so they got scared to get their injections done 😭😂 I hate fainting. Everything gets blurry and you can’t hear normally it’s kinda like you’re in a bubble.
Ally Kinz (2 месяца назад)
FANGIRL  Aw thanks. And yes, fainting does suck.
FANGIRL (2 месяца назад)
Ally Kinz make sure to eat (:: hope you’re okay, fainting sucks .
Ally Kinz (2 месяца назад)
Lmao. One time I hardly ate or drank the whole entire day. My heart started to beat fast and I started to feel light headed. I was really tired, too. I was up in my room when it happened, and I don't even remember falling. I just remember seeing black. I woke up like 10 seconds later and my parents came up to my room with food and a drink. It was scary lol.
Brian Harvey Garcia (3 месяца назад)
I almost fainted during our PE Class, i even puked a couple of times
Didik Achmadi (3 месяца назад)
33 years old and i never pass out until 4 months ago. It was Sunday, lunch time and i'm about to eat, all of sudden i had this black out . My wife were panicking since she tried to wake me up but she couldn't. Couple of minutes later i regain my consciousness and my family took me to the emergency room, the doctor in charge evaluate my blood pressure, heartbeat rate, also took my blood for a lab test. The result, all was normal and they let me back home with 2 types of medicine. After watching this i guess everything is fine, just a non-serious faint with less oxygen carrying blood going on inside my brain.
tieme koenders (3 месяца назад)
i have a question can you faint from fear ?
RaccoonMoustache (3 месяца назад)
When you faint there’s black coming around your vision and everything starts to blur away, you can’t pay attention to anything and even when you never experienced it you KNOW that you’re gonna faint. It hurts your head more and more, you feel dragged down as it’s putting more pressure on your head, it’s really not comfortable, you have cold sweat and your head feels really weird. You lose control and you feel the urge to look around and distract yourself, trying to do something to think of something else, but you CAN’T. Then you just pass out and remember nothing of what happened during the time you faint. Then when you wake up you’re just like wtf happened and you really feel bizarre.
Norah Sessions (3 месяца назад)
I fainted today and was like “defuw jus happened...??”
TaylorAnd Graphite (3 месяца назад)
Talk about POTs
Vika Kika (3 месяца назад)
I just fainted for a sec because I stood up really fast and it's kinda hot
Elizabeth Everson (3 месяца назад)
Whenever I have my panic attacks I get lightheaded and dizzy. Everything turns black but I’m still standing. My head starts to hurt like someone is pushing down on it while my heart if beating really fast. I usually just close my eyes and fall against a wall. It happens a lot.
•KiingGus• (3 месяца назад)
One time I passed out in church and hit my head on the bench
Harazarr (4 месяца назад)
This happened to me today lol
BenCat07 (4 месяца назад)
I ALMOST fainted once, like i wasn't feeling very well and after i went out of our Living room I had this green vision which i sometimes get from getting up too fast (missing oxygen), shortly after i couldn't properly stand anymore and couldn't see, i fell right through our living room door made of glass, i didn't feel any pain or quite knew what happened, but i could still talk and hear, after like 2 minutes i noticed i smashed through the glass door and after 5 minutes i was Okay Again, Luckily my Mom was around and helped me by sitting me down in a Chair and also removing the glass all over the floor, i wasn't really injured i just had a little wound on my arm, but it was still not very pleasant
The Woah Gals (4 месяца назад)
I fainted today...
Regular Apistevist (4 месяца назад)
I’m 34 years old and never fainted in my entire life, I did experience something odd though, in 2011 or 2012 I had the feeling of falling while I’m sitting, it just happens in a fraction of a second but it feels like forever! Never had it standing up!
angie bittinger (4 месяца назад)
haha i fainted at my graduation
Ahmed Saad (4 месяца назад)
I can't faint the way i did before .
Amine Elazar (4 месяца назад)
I Came For The Cheeks Sandy (4 месяца назад)
I faint every time I bust a nut
GeloVerse (4 месяца назад)
Literally happened to me today in bio class when i had to draw blood from my body. After that pricking i was okay until i was losing my eyesight and lost hearing.
My literal Husband (4 месяца назад)
I faint when i suddenly feel really hot, stress and forgetting to eat dinner and breakfast sad times
Mutt (4 месяца назад)
I fainted once when I got out of a hot shower and it lessened the oxygen I was getting bc of all the steam, so when you are about to faint, it feels like your body is getting heavier for your legs, your hearing gets muffled and you just, lose consciousness.
Mexikan Stuhrmtroopen (5 месяцев назад)
Unpleasant? I love it!
Blue Velvet (5 месяцев назад)
1:03 Boom goes the dynamite
die (5 месяцев назад)
I am so scared I almost fainted like 5 minutes ago. Ok storytime. So I got basically no sleep today and I am on my period. So I was in the shower and I was going to shave. The shaving cream package said to turn on the hottest water I could take for 30 seconds. So I did that and it was going good until my vision started getting blurry and I felt nauseous and I was cramping severely. So I got out and there was so much blood dripping down my legs. As my vision was blurry I turn the water back on and clean my legs. Then I go to see if my mom was home and she was and she helped me. It only lasted like 5 minutes but I was so scared and thought I was dying.
Elijah Killy (5 месяцев назад)
I’m conscious when I black out I just can’t see anything but I’ll have a seizure while standing then get very disoriented then finally fall
Sasageyo is My name (5 месяцев назад)
On time I stood up from my bed then my head starting hurting then I felt dizzy then just fell to the floor and blacked out for a few seconds then started shaking then woke up..
The Golden Tiger (5 месяцев назад)
I've never fainted in my life but I had to rush to take my friend to the hospital in the morning so I didn't have anything to eat so with the amount of blood and low blood sugar made me almost faint.
vloging Boy (5 месяцев назад)
when i was 5 we had to get are shots in school when i got my one i went back to my seat and then i woke up on the floor
Harzlibube (5 месяцев назад)
I fainted about a year ago and it was pretty scary and i woke up crying. My dad was yelling at me and my vision started going blurry and i felt extremely dizzy and started swaying side to side and i couldn't stand up straight. Then I fell and hit my head on a cupboard and I heard the noise of me hitting my head and everything went black. I woke up and asked my mum how long I was out for and she said "30 seconds" but it felt like I was asleep forever.
Jona C (5 месяцев назад)
Great info. Fainted 2x about a little more than 1 hour ago.
Crypto Addict (5 месяцев назад)
This happened to me when I smoked too much weed, I over did it that time.. If you over do it, you will pass out as well. You will start to see black dots, then be blind for 15 min. Sound will be reduced, almost deaf. Feel really sweaty, yet so cold... Your muscles are all shut down, so you can't move. The only thing I was thinking during that moment was that I was about to die. Flashbacks through my mind about what I did in my life in those 15/20 minutes. A better way isn't there to describe :/
mkffin (6 месяцев назад)
I faint/blackout alot, idk why... I will stand up or be walking 'anything' then this pain shocks in my head or the back of my kneck, then my vision goes blurry and i usally fall to the floor or have to hold onto something until, The pain goes away,please someone give me answers x
MiyakaHana (2 месяца назад)
Look up POTS. It happens when moving to an upright position. Almost in the same category as vasovagal syncope.
SirGivesAlout Gaming (6 месяцев назад)
Who else is watching this straight after they fainted?
JT TUNAGE (6 месяцев назад)
Has anybody stretched and hold your breath at the same time and black out and you have like a tiny dream or sum?
Cynthia Cabrera (6 месяцев назад)
I want to faint before I die... Don't know why.😅😂😂
skinnypenis12 3 (6 месяцев назад)
I've fainted 3 times today
skinnypenis12 3 (6 месяцев назад)
Call me weird but I like to make myself faint
Snow flake (6 месяцев назад)
When last time I fainted I feel like the noises get louder
Rudi Barczewska (6 месяцев назад)
Why do you convulse when you faint though? Does it happen to everyone? I am tired of scaring the crap out of my friends
s w i f t (6 месяцев назад)
Treatment please
ENEMYone365 (6 месяцев назад)
I fainted this one time and woke up in this place where it was both dark and bright, I didn’t have a body but I was able to look around, and just like that I wake up, is that what happens when you faint?
Tavesh Deonandan - Turner Fenton SS (2572) (6 месяцев назад)
I pass out 5 times in my life
FireFlie (7 месяцев назад)
i fainted today and it was horrible bascily we was having some stuff injected into us after it was done a few mins later still sitting on this chair talking to someone i fell over and 30 seconds later i woke up everything was dark and this horrible noise was in my ears and my balance was tottaly off its a horrible feeling never want to feel it again
Conbro098 (7 месяцев назад)
Happened to me twice it’s so cool
Elysha Nygaard (7 месяцев назад)
this is why i pass out when i give blood lol. i always get made fun of since i have tons of tats
Rae Dai (7 месяцев назад)
I wonder if you can explain why I don't just faint. When I faint I shake violently. The last time I did this I kicked my shoes off and gave myself whip lash. I only faint seeing or thinking about my own bodily functions like blood or pulse for too long. And no it isn't a seizure. I know that it's fainting I'm just curious why some people shake and some don't.
Alimo Eskimo (7 месяцев назад)
I started to faint when the eye doctor dilated my eyes with eye drops. I was just waking around in the shopping center waiting for my prescription and I was like "LOL WOAAHH I CAaAnNT EVen focus my EYES HOW Weeird" and then next thing I know I was walking like a drunk driver and fell completely over. My mom helped get over somewhere and got the doctor but it was really weird. According to the doctor and a few other sources, some people have a crazy reaction the first time they get there eyes dilated. It's some kind of reflex. Afterward I didn't even want to eat the snickers my mom made me eat, I felt so sick and woozy, almost like my body was having a breakdown but I wasn't afraid or any thing.
ConnorConnor (7 месяцев назад)
Once, I fainted on the toilet. Then I got into an ambulance.
ArtificialFeelings (7 месяцев назад)
I've never fainted before. Is it scary because it seems like it
Stale Tips (7 месяцев назад)
That's not a good thing your Involuntary Functions are volunteering for this.
Minus Mimik (7 месяцев назад)
I faint all the time. I faint after almost all of my daily panic attacks, I faint if I stand up way to quickly, I faint if people mention the possibility of needing surgery, I faint when I get too stressed, I faint when I stretch in the morning, sometimes I faint when I walk through my doorway, I fainted when my mum took me to get a blood test to find out why I faint so much, I fainted after I won a round on an online video game, I fainted on the stairs cause it was raining. wwwwwhhhhhhhhhyyyyyyyyyyyyyyy does this happen to meeeeee!?
Veronica Vinaja (7 месяцев назад)
I fainted after I just finished donating blood. I was walking towards the snacks. And had the urge to throw up and tried to drink a gatorade. Then I noticed everything darkening. Like tunnel vision and my hearing was coming and going. I look down to take a breath and then I fell over. The staff did a wonderful job at getting me on a seat to elevate my feet, and ice packs. They made sure to keep talking to me to keep me awake. I eventually calmed down and everything was back to normal. But I can't stop thinking about death now. I honestly could've died if my blood pressure didn't raise back up as fast as it did..
Keegan LeFevre (7 месяцев назад)
When I fainted i was 15 and standing at a door. i was out for about half a minute. when i woke up the last thing i could remember was standing at the door. when i woke up i was on ground, and i hit my head hard.
No Name (7 месяцев назад)
I faint about once to twice a day. I have problems with low blood sugars and blood pressure xD
Charlotte Linder (8 месяцев назад)
This makes a lot of sense I fainted today after sucking a lot of helium.
Z- Pikabot (8 месяцев назад)
I fainted in church because I’m kneeling, scary experience
Skye (8 месяцев назад)
I fainted today, and it was NOT FUN!
KawaiiArtie Michelle (8 месяцев назад)
I faint in school in Christmas concerts and I THINK it is there was too much people in the same room and it was too hot and its so embarrassing :(
❁☆K͙αωαιι J͙єиєνιєνɛ☆❁ (8 месяцев назад)
I fainted today
Andy Wright (8 месяцев назад)
I fainted in Tesco wille getting douhnuts today and a man with first aid came running over but at least I saved $1-05 and I got to eat my tasty treat for free in my bed
Emma Wells (8 месяцев назад)
I once passed out in church (went right over the pew) and then I just woke up in a classroom with coke being shoved in my face... it was great. Idk why i didnt do something cause i knew i was going to since i had before. OH WELL
Leong Birlis (8 месяцев назад)
I fainted in my P.E. lessons after climbing 200 steps within a minute or two. I was taking a rest and trying to regulate my breathing. I even felt fine and cheered for my other classmates who were still doing it. Just then I started hearing 'wheee----' in my ears until I couldn't hear anything. I started to see black dots and they become bigger, then idk what happened. I guess I fainted. When I woke up, I was in a wheelchair with the school doctor XD I had a terrible headache after that which lasts for a day.
Delta Elite (8 месяцев назад)
I don’t faint I just idk like black out and I can’t move when it happens
Spice 0o0 (8 месяцев назад)
I fainted today 3-26-18 and it was bc my blood level was at 37 and dehydrated it felt like a black liquid was filling up in my eyes and it’s scary bc I got super hot and started sweating
REAGANTICS (8 месяцев назад)
So it’s kinda like that nerve is telling ur body to “SHUT TF UP” and then it doesn’t listen so it just shuts us down and we reboot....... cool
Nombulelo Kubhayi (8 месяцев назад)
I fainted today, in church and my wig fell off. when I came to.. a man handed me my wig and I put it back on before walking out of the church. Good times
jdjdjdd djdjdjdj (8 месяцев назад)
Adrenal fatigue and dysautonomia
Luna Plush (8 месяцев назад)
I’ve fainted numerous times over the last couple years I fainted again today I really thought I was going to die
AdrianAtGaming (8 месяцев назад)
it happens after 11 pm or before sleeping
Luna (8 месяцев назад)
Yeah so I fainted today for the first time after getting my blood drawn. I hadn't eaten enough so I ended up just falling over. Apparently I said I felt faint and asked to sit down but the next thing I knew, I was on the ground and there were 6 doctors around me asking if I was ok lol. It kind of just felt like I'd fallen asleep. It was the strangest feeling.
Kathii K (8 месяцев назад)
I once fainted in school and no one noticed 🙃 I somehow managed to get up after a minute and tell my teacher that I don't feel too well 😅
Anime Chrox (8 месяцев назад)
Just a few minutes ago my visuals went black and I couldn’t move my body I was still conscious while everything was happening but it’s happening more and more often each day
Shrey Upadhyay (8 месяцев назад)

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